1. Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, People's Republic of China.
2. Institute of Urology , Anhui Medical University, Hefei, Anhui, People's Republic of China.
3. Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, People's Republic of China.